[rescue] Block size and the single DD

Kevin kevin at mpcf.com
Wed Feb 11 10:12:14 CST 2004


I don't know whether it makes a difference in this scenario or
not, but xfsdump will backup ACLs where as GNU tar will not.

And the days of backing up to tape are still plentiful and
innumerable.

/KRM

On Wed, 11 Feb 2004 10:52:29 -0500
"Kevin Loch" <kloch at gurunet.net> wrote:

> Sheldon T. Hall wrote:
> > So I've got this Solaris shell script that backs up my SGI
> > machines to the spiffy new DLT tape drive on my
> > SPARCclassic....
> > 
> > The heart of the script is this line:
> > 
> > 	rsh $MACHINE xfsdump -l 0 -F - $FS | dd of=$TAPE bs=$BS
> > 
> > I run that on the Sun with values like
> > 
> > 	MACHINE=blinky	# Indigo2 R4k
> > 	FS=/dev/root
> > 	TAPE=/dev/rmt/1cn	# DLT 2000xt on Sun SBUS card
> > 	BS=1024k
> > 
> > Now, this works, but it's so slow that the DLT tape
> > shoeshines itself into a lather.
> > 
> 
> I thought the days of backing up directly to tape were long
> gone. How about setting up a remote backup server with large
> disks and the dlt?  Also, is there anything that xfsdump gives
> you that you wouldn't get from gnu tar?
> 
> KL
> _______________________________________________
> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue


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